/**
 * Copyright (c) 2017 Baidu, Inc. All Rights Reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice,
 * this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 * this list of conditions and the following disclaimer in the documentation
 * and/or other materials provided with the distribution.
 *
 * 3. Neither the name of the copyright holder nor the names of its contributors
 * may be used to endorse or promote products derived from this software without
 * specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

package com.fuxi.javaagent.messaging;

import java.util.concurrent.*;

/**
 * Created by lxk on 9/12/17.
 */
public class AsyncHttpClient extends HttpClient {
    private final ExecutorService threadPool;
    private final int cpuCoreSize;

    public AsyncHttpClient() {
        super();
        cpuCoreSize = Runtime.getRuntime().availableProcessors();
        threadPool = new ThreadPoolExecutor(cpuCoreSize + 1, 5 * cpuCoreSize +1, 60L, TimeUnit.SECONDS,
                new LinkedBlockingQueue<Runnable>(), new ThreadPoolExecutor.DiscardPolicy());
    }

    @Override
    public void request(final String requestUrl, final String attackInfoJson, final int connectionTimeout, final int readTimeout) {
        threadPool.execute(new Runnable() {
            @Override
            public void run() {
                AsyncHttpClient.super.request(requestUrl, attackInfoJson, connectionTimeout, readTimeout);
            }
        });
    }

    /**
     * 判断当阻塞队列size小于cpucore数目
     * @return
     */
    public boolean shouldSend() {
        if (threadPool instanceof ThreadPoolExecutor) {
            return ((ThreadPoolExecutor) threadPool).getQueue().size() < cpuCoreSize;
        }
        return true;
    }
}
